AU522756B2 - Proportional ground current relay - Google Patents

Proportional ground current relay

Info

Publication number
AU522756B2
AU522756B2 AU39605/78A AU3960578A AU522756B2 AU 522756 B2 AU522756 B2 AU 522756B2 AU 39605/78 A AU39605/78 A AU 39605/78A AU 3960578 A AU3960578 A AU 3960578A AU 522756 B2 AU522756 B2 AU 522756B2
Authority
AU
Australia
Prior art keywords
current relay
ground current
proportional ground
proportional
relay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU39605/78A
Other versions
AU3960578A (en
Inventor
J. Moran Richard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
McGraw Edison Co
Original Assignee
McGraw Edison Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by McGraw Edison Co filed Critical McGraw Edison Co
Publication of AU3960578A publication Critical patent/AU3960578A/en
Application granted granted Critical
Publication of AU522756B2 publication Critical patent/AU522756B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
AU39605/78A 1977-09-06 1978-09-06 Proportional ground current relay Expired AU522756B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/830,653 US4161761A (en) 1977-09-06 1977-09-06 Proportional ground current relay
USUS830653 1977-09-06

Publications (2)

Publication Number Publication Date
AU3960578A AU3960578A (en) 1980-03-13
AU522756B2 true AU522756B2 (en) 1982-06-24

Family

ID=25257406

Family Applications (1)

Application Number Title Priority Date Filing Date
AU39605/78A Expired AU522756B2 (en) 1977-09-06 1978-09-06 Proportional ground current relay

Country Status (7)

Country Link
US (1) US4161761A (en)
AR (1) AR221064A1 (en)
AU (1) AU522756B2 (en)
BR (1) BR7805804A (en)
CA (1) CA1101066A (en)
NZ (1) NZ188350A (en)
ZA (1) ZA785060B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272797A (en) * 1979-07-31 1981-06-09 General Electric Company Fast recovery peak detector
US4562506A (en) * 1984-02-14 1985-12-31 Cooper Industries, Inc. Distribution line powered switchgear control
US4931896A (en) * 1985-03-14 1990-06-05 Cooper Industries, Inc. Distribution line switchgear control with isolated cascaded power supplies
US4912591A (en) * 1985-03-14 1990-03-27 Cooper Power Systems, Inc. Distribution line switchgear control employing a precision rectifier
US4851782A (en) * 1987-01-15 1989-07-25 Jeerings Donald I High impedance fault analyzer in electric power distribution
US4928200A (en) * 1987-04-02 1990-05-22 Cherry Semiconductor Corporation Overcurrent protection for switching mode power converter
US8537023B2 (en) * 2011-05-26 2013-09-17 Ilight Technologies, Inc. Method and apparatus pertaining to automatic electrical-fault detection
KR101517159B1 (en) * 2013-11-13 2015-05-04 주식회사 에렐 Three phase electric leakage current circuit braker with electric shock protection
US11476674B2 (en) * 2018-09-18 2022-10-18 Sentient Technology Holdings, LLC Systems and methods to maximize power from multiple power line energy harvesting devices
JP7148476B2 (en) * 2019-10-25 2022-10-05 株式会社東芝 Power switch, power rectifier and power converter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345539A (en) * 1965-07-19 1967-10-03 Allis Chalmers Mfg Co Static overcurrent tripping system having phase-to-phase and phase-to-ground fault protection
US3434011A (en) * 1966-08-25 1969-03-18 Ite Circuit Breaker Ltd Saturating current transformer for static relays
US3689801A (en) * 1970-05-07 1972-09-05 Westinghouse Electric Corp Circuit breaker including improved current auctioneering circuit
US3956670A (en) * 1973-01-30 1976-05-11 Westinghouse Electric Corporation Circuit interrupter circuit including improved control
US4027203A (en) * 1975-03-06 1977-05-31 Mcgraw-Edison Company Protective switch device for electrical distribution systems
US4060844A (en) * 1976-02-17 1977-11-29 I-T-E Imperial Corporation Solid state tripping circuit

Also Published As

Publication number Publication date
BR7805804A (en) 1979-04-24
NZ188350A (en) 1982-09-07
AU3960578A (en) 1980-03-13
US4161761A (en) 1979-07-17
CA1101066A (en) 1981-05-12
ZA785060B (en) 1979-08-29
AR221064A1 (en) 1980-12-30

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